Indirect Evaporative Cooling Residential

Direct and indirect evaporative cooling strategies.

Indirect evaporative cooling residential.

What is evaporative cooling. When the water evaporates the heat of vaporization imparts a cooling effect to the outer wall of the heat exchanger. This cooling option is much more energy efficient than cooling with refrigerant standard air conditioning but it s not suitable for all cooling applications. This allows the airstream which contacts the outer wall to be sensibly cooled.

A 2 stage evaporative cooling system aka indirect direct cooling represents the most advanced cooling system utilizing evaporative cooling technology. In indirect evaporative cooling two opposing airstreams contact different sides of a heat exchanger. Indirect evaporative cooling closed circuit is a cooling process that uses direct evaporative cooling in addition to some heat exchanger to transfer the cool energy to the supply air. Indirect evaporative cooling works on the same principle as direct evaporative cooling lowering air temperature by causing water to evaporate.

Indirect evaporative cooling occurs when water sprayed to the interior wall of a heat exchanger evaporates. As the air is pushed through the cooling pads the water evaporates and the heat in the air is absorbed which. The main difference with an indirect system is that a heat exchanger is used to cool the air supplied to the living space. The evaporative cooling cycle occurs in the heat exchanger.

It is an excellent upgrade over conventional air washers. As the name suggests an evaporative air conditioner uses evaporation to help cool the air. Based on the principles of evaporation hot and dry outside air is pumped through water soaked cooling pads. For steam humidifiers this energy typically comes from the electricity or gas being used to boil the water.

The cooled moist air from the direct evaporative cooling process never comes in direct contact with the conditioned supply air. To evaporate 1kg of water into an atmosphere 680w of energy is required. The indirect evaporative section also incorporates a scavenger fan to exhaust air through the pipes a water distribution system which includes a water pump and spray nozzles to provide a uniform distribution over the entire heat exchanger and a filter section to clean and maintain incoming air into the system. However for cold water humidifiers this energy is taken from the air in the form of heat which results in a.

This enables the idecool to deliver cool air at sufficiently reduced dry bulb temperature and low moisture level.